2.79 vs. 2.8 F6 key to recall menu
The shortcut is F9 or you can access it through Edit &gt; Adjust Last Operation.

Quoting from the Manual:

After an operation is complete you can tweak the parameters of the operation afterwards. In editors that support it, there is a “head-up display” panel in the bottom left based on the last performed operation; dependent on mode and context. Alternatively, you can create a pop-up with F9 which does the same thing.